./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 602710bfdeba1413bfd2cc1b6bd5a194591bac373d29bd83e435c67ebf5ec2d9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:54:31,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:54:31,374 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:54:31,379 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:54:31,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:54:31,401 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:54:31,402 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:54:31,403 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:54:31,403 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:54:31,404 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:54:31,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:54:31,405 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:54:31,406 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:54:31,406 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:54:31,406 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:54:31,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:54:31,407 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:54:31,408 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:54:31,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:54:31,409 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:54:31,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:54:31,410 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:54:31,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:54:31,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:54:31,411 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:54:31,411 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:54:31,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:54:31,412 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:54:31,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:54:31,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:54:31,428 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:54:31,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:54:31,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:54:31,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:54:31,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:54:31,430 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:54:31,431 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:54:31,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:54:31,432 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:54:31,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:54:31,432 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:54:31,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:54:31,433 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 602710bfdeba1413bfd2cc1b6bd5a194591bac373d29bd83e435c67ebf5ec2d9 [2024-11-08 18:54:31,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:54:31,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:54:31,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:54:31,768 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:54:31,769 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:54:31,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i Unable to find full path for "g++" [2024-11-08 18:54:34,016 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:54:34,230 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:54:34,231 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i [2024-11-08 18:54:34,241 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/data/ed2c72122/e3f8286891ec430d83553473f532e692/FLAG2b86c978a [2024-11-08 18:54:34,585 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/data/ed2c72122/e3f8286891ec430d83553473f532e692 [2024-11-08 18:54:34,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:54:34,589 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:54:34,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:54:34,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:54:34,600 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:54:34,601 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:54:34" (1/1) ... [2024-11-08 18:54:34,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@554ba0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:34, skipping insertion in model container [2024-11-08 18:54:34,605 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:54:34" (1/1) ... [2024-11-08 18:54:34,634 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:54:34,836 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i[915,928] [2024-11-08 18:54:34,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:54:34,888 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:54:34,901 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i[915,928] [2024-11-08 18:54:34,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:54:34,940 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:54:34,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:34 WrapperNode [2024-11-08 18:54:34,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:54:34,942 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:54:34,942 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:54:34,942 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:54:34,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:34" (1/1) ... [2024-11-08 18:54:34,958 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:34" (1/1) ... [2024-11-08 18:54:34,999 INFO L138 Inliner]: procedures = 26, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 112 [2024-11-08 18:54:35,000 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:54:35,000 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:54:35,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:54:35,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:54:35,013 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:34" (1/1) ... [2024-11-08 18:54:35,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:34" (1/1) ... [2024-11-08 18:54:35,016 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:34" (1/1) ... [2024-11-08 18:54:35,034 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 18:54:35,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:34" (1/1) ... [2024-11-08 18:54:35,035 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:34" (1/1) ... [2024-11-08 18:54:35,042 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:34" (1/1) ... [2024-11-08 18:54:35,045 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:34" (1/1) ... [2024-11-08 18:54:35,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:34" (1/1) ... [2024-11-08 18:54:35,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:34" (1/1) ... [2024-11-08 18:54:35,053 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:54:35,054 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:54:35,054 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:54:35,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:54:35,055 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:34" (1/1) ... [2024-11-08 18:54:35,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:54:35,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:54:35,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:54:35,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:54:35,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:54:35,135 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 18:54:35,136 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 18:54:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:54:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:54:35,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:54:35,239 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:54:35,243 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:54:35,670 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-08 18:54:35,670 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:54:35,697 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:54:35,697 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:54:35,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:54:35 BoogieIcfgContainer [2024-11-08 18:54:35,698 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:54:35,702 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:54:35,702 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:54:35,706 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:54:35,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:54:34" (1/3) ... [2024-11-08 18:54:35,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a555ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:54:35, skipping insertion in model container [2024-11-08 18:54:35,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:34" (2/3) ... [2024-11-08 18:54:35,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a555ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:54:35, skipping insertion in model container [2024-11-08 18:54:35,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:54:35" (3/3) ... [2024-11-08 18:54:35,711 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-37.i [2024-11-08 18:54:35,736 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:54:35,737 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:54:35,807 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:54:35,815 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@15c0cc64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:54:35,815 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 18:54:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 40 states have internal predecessors, (55), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 18:54:35,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 18:54:35,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:54:35,833 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:54:35,834 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:54:35,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:35,840 INFO L85 PathProgramCache]: Analyzing trace with hash 648401333, now seen corresponding path program 1 times [2024-11-08 18:54:35,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:35,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100342372] [2024-11-08 18:54:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:35,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 18:54:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 18:54:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 18:54:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-08 18:54:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 18:54:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 18:54:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-08 18:54:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 18:54:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 18:54:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-08 18:54:36,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:36,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100342372] [2024-11-08 18:54:36,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100342372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:54:36,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:54:36,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:54:36,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927604971] [2024-11-08 18:54:36,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:54:36,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 18:54:36,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:36,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 18:54:36,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:54:36,328 INFO L87 Difference]: Start difference. First operand has 51 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 40 states have internal predecessors, (55), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-08 18:54:36,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:54:36,354 INFO L93 Difference]: Finished difference Result 99 states and 152 transitions. [2024-11-08 18:54:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 18:54:36,357 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 69 [2024-11-08 18:54:36,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:54:36,367 INFO L225 Difference]: With dead ends: 99 [2024-11-08 18:54:36,367 INFO L226 Difference]: Without dead ends: 47 [2024-11-08 18:54:36,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:54:36,377 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:54:36,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:54:36,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-08 18:54:36,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-08 18:54:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 18:54:36,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 66 transitions. [2024-11-08 18:54:36,427 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 66 transitions. Word has length 69 [2024-11-08 18:54:36,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:54:36,428 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 66 transitions. [2024-11-08 18:54:36,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-08 18:54:36,428 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 66 transitions. [2024-11-08 18:54:36,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 18:54:36,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:54:36,432 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:54:36,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:54:36,433 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:54:36,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:36,434 INFO L85 PathProgramCache]: Analyzing trace with hash -634585673, now seen corresponding path program 1 times [2024-11-08 18:54:36,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:36,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117271781] [2024-11-08 18:54:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:36,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 18:54:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 18:54:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 18:54:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-08 18:54:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 18:54:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 18:54:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-08 18:54:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 18:54:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 18:54:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-08 18:54:36,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:36,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117271781] [2024-11-08 18:54:36,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117271781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:54:36,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:54:36,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:54:36,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380476176] [2024-11-08 18:54:36,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:54:36,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:54:36,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:36,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:54:36,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:54:36,966 INFO L87 Difference]: Start difference. First operand 47 states and 66 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-08 18:54:37,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:54:37,011 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2024-11-08 18:54:37,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:54:37,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 69 [2024-11-08 18:54:37,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:54:37,014 INFO L225 Difference]: With dead ends: 91 [2024-11-08 18:54:37,014 INFO L226 Difference]: Without dead ends: 47 [2024-11-08 18:54:37,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:54:37,017 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:54:37,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:54:37,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-08 18:54:37,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-08 18:54:37,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 36 states have internal predecessors, (47), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 18:54:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 65 transitions. [2024-11-08 18:54:37,027 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 65 transitions. Word has length 69 [2024-11-08 18:54:37,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:54:37,029 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 65 transitions. [2024-11-08 18:54:37,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-08 18:54:37,030 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 65 transitions. [2024-11-08 18:54:37,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 18:54:37,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:54:37,032 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:54:37,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:54:37,033 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:54:37,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:37,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1443932299, now seen corresponding path program 1 times [2024-11-08 18:54:37,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:37,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450434707] [2024-11-08 18:54:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:37,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:37,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 18:54:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:37,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 18:54:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:37,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 18:54:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:37,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-08 18:54:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:37,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 18:54:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:37,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 18:54:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:37,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-08 18:54:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:37,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 18:54:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:37,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 18:54:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:37,474 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 18:54:37,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:37,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450434707] [2024-11-08 18:54:37,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450434707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:54:37,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418650729] [2024-11-08 18:54:37,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:37,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:37,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:54:37,481 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:54:37,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:54:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:37,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:54:37,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:54:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-08 18:54:37,946 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:54:38,228 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 18:54:38,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418650729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:54:38,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:54:38,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-08 18:54:38,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424955471] [2024-11-08 18:54:38,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:54:38,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:54:38,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:38,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:54:38,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:54:38,239 INFO L87 Difference]: Start difference. First operand 47 states and 65 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-08 18:54:38,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:54:38,490 INFO L93 Difference]: Finished difference Result 97 states and 132 transitions. [2024-11-08 18:54:38,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:54:38,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 69 [2024-11-08 18:54:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:54:38,494 INFO L225 Difference]: With dead ends: 97 [2024-11-08 18:54:38,498 INFO L226 Difference]: Without dead ends: 53 [2024-11-08 18:54:38,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:54:38,500 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 71 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:54:38,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 103 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:54:38,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-08 18:54:38,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2024-11-08 18:54:38,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 18:54:38,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2024-11-08 18:54:38,511 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 69 [2024-11-08 18:54:38,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:54:38,512 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2024-11-08 18:54:38,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-08 18:54:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2024-11-08 18:54:38,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-08 18:54:38,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:54:38,516 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:54:38,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 18:54:38,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:38,721 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:54:38,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:38,721 INFO L85 PathProgramCache]: Analyzing trace with hash -540625191, now seen corresponding path program 1 times [2024-11-08 18:54:38,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:38,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146619262] [2024-11-08 18:54:38,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:38,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:39,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 18:54:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:39,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 18:54:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:39,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 18:54:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:39,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-08 18:54:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:39,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 18:54:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:39,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 18:54:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:39,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-08 18:54:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:39,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 18:54:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:39,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 18:54:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:39,140 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 18:54:39,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:39,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146619262] [2024-11-08 18:54:39,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146619262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:54:39,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076544918] [2024-11-08 18:54:39,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:39,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:39,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:54:39,148 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:54:39,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:54:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:39,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 18:54:39,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:54:39,480 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-08 18:54:39,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:54:39,690 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 18:54:39,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076544918] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:54:39,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:54:39,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-08 18:54:39,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781383629] [2024-11-08 18:54:39,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:54:39,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 18:54:39,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:39,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 18:54:39,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:54:39,694 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-08 18:54:39,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:54:39,938 INFO L93 Difference]: Finished difference Result 103 states and 135 transitions. [2024-11-08 18:54:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:54:39,944 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 71 [2024-11-08 18:54:39,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:54:39,948 INFO L225 Difference]: With dead ends: 103 [2024-11-08 18:54:39,948 INFO L226 Difference]: Without dead ends: 55 [2024-11-08 18:54:39,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:54:39,952 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 36 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:54:39,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 138 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:54:39,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-08 18:54:39,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2024-11-08 18:54:39,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 18:54:39,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2024-11-08 18:54:39,970 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 71 [2024-11-08 18:54:39,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:54:39,970 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2024-11-08 18:54:39,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-08 18:54:39,971 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2024-11-08 18:54:39,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-08 18:54:39,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:54:39,974 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:54:39,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:54:40,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:40,179 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:54:40,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:40,179 INFO L85 PathProgramCache]: Analyzing trace with hash 62547518, now seen corresponding path program 1 times [2024-11-08 18:54:40,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:40,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387649864] [2024-11-08 18:54:40,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:40,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 18:54:40,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126831257] [2024-11-08 18:54:40,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:40,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:40,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:54:40,285 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:54:40,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:54:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:40,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 18:54:40,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:54:40,792 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-08 18:54:40,792 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:54:40,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:40,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387649864] [2024-11-08 18:54:40,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 18:54:40,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126831257] [2024-11-08 18:54:40,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126831257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:54:40,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:54:40,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:54:40,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567402759] [2024-11-08 18:54:40,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:54:40,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:54:40,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:40,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:54:40,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:54:40,796 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-08 18:54:40,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:54:40,967 INFO L93 Difference]: Finished difference Result 151 states and 196 transitions. [2024-11-08 18:54:40,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:54:40,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 72 [2024-11-08 18:54:40,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:54:40,971 INFO L225 Difference]: With dead ends: 151 [2024-11-08 18:54:40,971 INFO L226 Difference]: Without dead ends: 102 [2024-11-08 18:54:40,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:54:40,974 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 48 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:54:40,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 150 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:54:40,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-08 18:54:40,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 93. [2024-11-08 18:54:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 70 states have internal predecessors, (83), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-08 18:54:40,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2024-11-08 18:54:40,996 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 72 [2024-11-08 18:54:40,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:54:40,996 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2024-11-08 18:54:40,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-08 18:54:40,997 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2024-11-08 18:54:40,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 18:54:40,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:54:40,998 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:54:41,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:54:41,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:41,203 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:54:41,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:41,203 INFO L85 PathProgramCache]: Analyzing trace with hash 134611577, now seen corresponding path program 1 times [2024-11-08 18:54:41,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:41,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784350345] [2024-11-08 18:54:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:41,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 18:54:41,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1844853401] [2024-11-08 18:54:41,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:41,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:41,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:54:41,267 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:54:41,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:54:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:54:41,372 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 18:54:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:54:41,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 18:54:41,486 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 18:54:41,488 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 18:54:41,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 18:54:41,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:41,694 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-08 18:54:41,773 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 18:54:41,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 06:54:41 BoogieIcfgContainer [2024-11-08 18:54:41,777 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 18:54:41,777 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 18:54:41,777 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 18:54:41,777 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 18:54:41,778 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:54:35" (3/4) ... [2024-11-08 18:54:41,781 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 18:54:41,782 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 18:54:41,783 INFO L158 Benchmark]: Toolchain (without parser) took 7194.09ms. Allocated memory was 144.7MB in the beginning and 186.6MB in the end (delta: 41.9MB). Free memory was 107.2MB in the beginning and 98.0MB in the end (delta: 9.1MB). Peak memory consumption was 52.6MB. Max. memory is 16.1GB. [2024-11-08 18:54:41,783 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 144.7MB. Free memory is still 113.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 18:54:41,784 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.48ms. Allocated memory is still 144.7MB. Free memory was 106.7MB in the beginning and 92.5MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-08 18:54:41,784 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.20ms. Allocated memory is still 144.7MB. Free memory was 92.5MB in the beginning and 89.0MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 18:54:41,785 INFO L158 Benchmark]: Boogie Preprocessor took 52.98ms. Allocated memory is still 144.7MB. Free memory was 89.0MB in the beginning and 84.6MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 18:54:41,785 INFO L158 Benchmark]: RCFGBuilder took 644.22ms. Allocated memory is still 144.7MB. Free memory was 84.1MB in the beginning and 63.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-08 18:54:41,785 INFO L158 Benchmark]: TraceAbstraction took 6074.94ms. Allocated memory was 144.7MB in the beginning and 186.6MB in the end (delta: 41.9MB). Free memory was 62.7MB in the beginning and 98.0MB in the end (delta: -35.4MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2024-11-08 18:54:41,786 INFO L158 Benchmark]: Witness Printer took 5.17ms. Allocated memory is still 186.6MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 18:54:41,788 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 144.7MB. Free memory is still 113.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 350.48ms. Allocated memory is still 144.7MB. Free memory was 106.7MB in the beginning and 92.5MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.20ms. Allocated memory is still 144.7MB. Free memory was 92.5MB in the beginning and 89.0MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.98ms. Allocated memory is still 144.7MB. Free memory was 89.0MB in the beginning and 84.6MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 644.22ms. Allocated memory is still 144.7MB. Free memory was 84.1MB in the beginning and 63.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 6074.94ms. Allocated memory was 144.7MB in the beginning and 186.6MB in the end (delta: 41.9MB). Free memory was 62.7MB in the beginning and 98.0MB in the end (delta: -35.4MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Witness Printer took 5.17ms. Allocated memory is still 186.6MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 81, overapproximation of bitwiseOr at line 81. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 8; [L23] unsigned short int var_1_2 = 59049; [L24] unsigned char var_1_6 = 4; [L25] unsigned char var_1_7 = 1; [L26] unsigned char var_1_8 = 64; [L27] unsigned long int var_1_9 = 64; [L28] unsigned long int var_1_10 = 1776833134; [L29] signed long int var_1_11 = -16; [L30] double var_1_12 = 0.25; [L31] double var_1_13 = 5.5; [L32] unsigned char last_1_var_1_8 = 64; [L33] signed long int last_1_var_1_11 = -16; VAL [isInitial=0, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=59049, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L85] isInitial = 1 [L86] FCALL initially() [L87] int k_loop; [L88] k_loop = 0 VAL [isInitial=1, k_loop=0, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=59049, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L88] COND FALSE !(k_loop < 1) VAL [isInitial=1, k_loop=0, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=59049, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L88] COND TRUE k_loop < 1 [L89] CALL updateLastVariables() [L77] last_1_var_1_8 = var_1_8 [L78] last_1_var_1_11 = var_1_11 VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=59049, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L89] RET updateLastVariables() [L90] CALL updateVariables() [L61] var_1_2 = __VERIFIER_nondet_ushort() [L62] CALL assume_abort_if_not(var_1_2 >= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L62] RET assume_abort_if_not(var_1_2 >= 32767) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L63] CALL assume_abort_if_not(var_1_2 <= 65535) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L63] RET assume_abort_if_not(var_1_2 <= 65535) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L64] var_1_6 = __VERIFIER_nondet_uchar() [L65] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_7=1, var_1_8=64, var_1_9=64] [L65] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_7=1, var_1_8=64, var_1_9=64] [L66] CALL assume_abort_if_not(var_1_6 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L66] RET assume_abort_if_not(var_1_6 <= 254) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L67] var_1_7 = __VERIFIER_nondet_uchar() [L68] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_8=64, var_1_9=64] [L68] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_8=64, var_1_9=64] [L69] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L69] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L70] var_1_10 = __VERIFIER_nondet_ulong() [L71] CALL assume_abort_if_not(var_1_10 >= 1073741824) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L71] RET assume_abort_if_not(var_1_10 >= 1073741824) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L72] CALL assume_abort_if_not(var_1_10 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L72] RET assume_abort_if_not(var_1_10 <= 2147483647) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L73] var_1_13 = __VERIFIER_nondet_double() [L74] CALL assume_abort_if_not((var_1_13 >= -922337.2036854765600e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L74] RET assume_abort_if_not((var_1_13 >= -922337.2036854765600e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L90] RET updateVariables() [L91] CALL step() [L37] EXPR (var_1_2 - last_1_var_1_8) ^ (last_1_var_1_8 * last_1_var_1_11) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L37] COND TRUE ((var_1_2 - last_1_var_1_8) ^ (last_1_var_1_8 * last_1_var_1_11)) <= -64 [L38] var_1_1 = ((((1) < (((((16) > (var_1_6)) ? (16) : (var_1_6))))) ? (1) : (((((16) > (var_1_6)) ? (16) : (var_1_6)))))) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L44] var_1_11 = var_1_1 VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=1, var_1_12=1/4, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L45] COND TRUE var_1_1 >= ((((var_1_11 / var_1_2) < 0 ) ? -(var_1_11 / var_1_2) : (var_1_11 / var_1_2))) [L46] var_1_8 = var_1_6 VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=1, var_1_12=1/4, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=0, var_1_9=64] [L52] unsigned char stepLocal_0 = var_1_1; VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, stepLocal_0=1, var_1_10=-3221225472, var_1_11=1, var_1_12=1/4, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=0, var_1_9=64] [L53] COND FALSE !(var_1_1 > stepLocal_0) [L56] var_1_9 = ((1228227409u + var_1_10) - var_1_11) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=1, var_1_12=1/4, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=0, var_1_9=-1992998064] [L58] var_1_12 = var_1_13 VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=1, var_1_12=2, var_1_13=2, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=0, var_1_9=-1992998064] [L91] RET step() [L92] CALL, EXPR property() [L81] EXPR (var_1_2 - last_1_var_1_8) ^ (last_1_var_1_8 * last_1_var_1_11) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=1, var_1_12=2, var_1_13=2, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=0, var_1_9=-1992998064] [L81-L82] return (((((((var_1_2 - last_1_var_1_8) ^ (last_1_var_1_8 * last_1_var_1_11)) <= -64) ? (var_1_1 == ((unsigned char) ((((1) < (((((16) > (var_1_6)) ? (16) : (var_1_6))))) ? (1) : (((((16) > (var_1_6)) ? (16) : (var_1_6)))))))) : (var_1_7 ? (var_1_1 == ((unsigned char) var_1_6)) : 1)) && ((var_1_1 >= ((((var_1_11 / var_1_2) < 0 ) ? -(var_1_11 / var_1_2) : (var_1_11 / var_1_2)))) ? (var_1_8 == ((unsigned char) var_1_6)) : (var_1_7 ? (var_1_8 == ((unsigned char) var_1_6)) : 1))) && ((var_1_1 > var_1_1) ? (var_1_9 == ((unsigned long int) var_1_2)) : (var_1_9 == ((unsigned long int) ((1228227409u + var_1_10) - var_1_11))))) && (var_1_11 == ((signed long int) var_1_1))) && (var_1_12 == ((double) var_1_13)) ; [L92] RET, EXPR property() [L92] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=1, var_1_12=2, var_1_13=2, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=0, var_1_9=-1992998064] [L19] reach_error() VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=1, var_1_12=2, var_1_13=2, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=0, var_1_9=-1992998064] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 6, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 155 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 155 mSDsluCounter, 580 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 310 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 268 IncrementalHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 270 mSDtfsCounter, 268 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 452 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=5, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 621 ConstructedInterpolants, 0 QuantifiedInterpolants, 1789 SizeOfPredicates, 8 NumberOfNonLiveVariables, 548 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 1152/1296 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-08 18:54:41,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 602710bfdeba1413bfd2cc1b6bd5a194591bac373d29bd83e435c67ebf5ec2d9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:54:44,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:54:44,635 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-08 18:54:44,643 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:54:44,644 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:54:44,678 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:54:44,679 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:54:44,679 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:54:44,680 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:54:44,682 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:54:44,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:54:44,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:54:44,683 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:54:44,687 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:54:44,687 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:54:44,688 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:54:44,688 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:54:44,688 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:54:44,688 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:54:44,689 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:54:44,689 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:54:44,690 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:54:44,690 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:54:44,690 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 18:54:44,690 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 18:54:44,691 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:54:44,691 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 18:54:44,691 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:54:44,692 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:54:44,692 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:54:44,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:54:44,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:54:44,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:54:44,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:54:44,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:54:44,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:54:44,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:54:44,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:54:44,695 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-08 18:54:44,695 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 18:54:44,695 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:54:44,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:54:44,697 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:54:44,697 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:54:44,697 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 602710bfdeba1413bfd2cc1b6bd5a194591bac373d29bd83e435c67ebf5ec2d9 [2024-11-08 18:54:45,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:54:45,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:54:45,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:54:45,134 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:54:45,135 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:54:45,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i Unable to find full path for "g++" [2024-11-08 18:54:47,605 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:54:47,893 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:54:47,893 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i [2024-11-08 18:54:47,904 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/data/b9a7f8c02/7de62335634f4035a694e3e90d7bd9b2/FLAGb445ff8fe [2024-11-08 18:54:48,213 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/data/b9a7f8c02/7de62335634f4035a694e3e90d7bd9b2 [2024-11-08 18:54:48,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:54:48,218 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:54:48,220 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:54:48,220 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:54:48,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:54:48,233 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:54:48" (1/1) ... [2024-11-08 18:54:48,234 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b51a169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:48, skipping insertion in model container [2024-11-08 18:54:48,235 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:54:48" (1/1) ... [2024-11-08 18:54:48,264 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:54:48,537 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i[915,928] [2024-11-08 18:54:48,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:54:48,616 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:54:48,636 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i[915,928] [2024-11-08 18:54:48,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:54:48,727 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:54:48,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:48 WrapperNode [2024-11-08 18:54:48,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:54:48,730 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:54:48,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:54:48,730 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:54:48,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:48" (1/1) ... [2024-11-08 18:54:48,756 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:48" (1/1) ... [2024-11-08 18:54:48,789 INFO L138 Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2024-11-08 18:54:48,790 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:54:48,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:54:48,791 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:54:48,791 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:54:48,805 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:48" (1/1) ... [2024-11-08 18:54:48,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:48" (1/1) ... [2024-11-08 18:54:48,809 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:48" (1/1) ... [2024-11-08 18:54:48,829 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 18:54:48,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:48" (1/1) ... [2024-11-08 18:54:48,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:48" (1/1) ... [2024-11-08 18:54:48,841 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:48" (1/1) ... [2024-11-08 18:54:48,849 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:48" (1/1) ... [2024-11-08 18:54:48,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:48" (1/1) ... [2024-11-08 18:54:48,853 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:48" (1/1) ... [2024-11-08 18:54:48,857 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:54:48,858 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:54:48,858 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:54:48,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:54:48,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:48" (1/1) ... [2024-11-08 18:54:48,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:54:48,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:54:48,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:54:48,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:54:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:54:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 18:54:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 18:54:48,946 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 18:54:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:54:48,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:54:49,081 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:54:49,084 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:54:49,485 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-08 18:54:49,485 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:54:49,500 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:54:49,501 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:54:49,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:54:49 BoogieIcfgContainer [2024-11-08 18:54:49,502 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:54:49,504 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:54:49,505 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:54:49,509 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:54:49,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:54:48" (1/3) ... [2024-11-08 18:54:49,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fda8b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:54:49, skipping insertion in model container [2024-11-08 18:54:49,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:48" (2/3) ... [2024-11-08 18:54:49,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fda8b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:54:49, skipping insertion in model container [2024-11-08 18:54:49,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:54:49" (3/3) ... [2024-11-08 18:54:49,513 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-37.i [2024-11-08 18:54:49,531 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:54:49,532 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:54:49,642 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:54:49,652 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@147f2e98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:54:49,653 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 18:54:49,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 31 states have internal predecessors, (40), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 18:54:49,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 18:54:49,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:54:49,674 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:54:49,675 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:54:49,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:49,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1714790374, now seen corresponding path program 1 times [2024-11-08 18:54:49,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:54:49,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031920985] [2024-11-08 18:54:49,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:49,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 18:54:49,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 18:54:49,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 18:54:49,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-08 18:54:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:49,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-08 18:54:49,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:54:50,000 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-08 18:54:50,001 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:54:50,002 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:54:50,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031920985] [2024-11-08 18:54:50,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031920985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:54:50,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:54:50,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:54:50,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550032536] [2024-11-08 18:54:50,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:54:50,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 18:54:50,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 18:54:50,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 18:54:50,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:54:50,050 INFO L87 Difference]: Start difference. First operand has 42 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 31 states have internal predecessors, (40), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-08 18:54:50,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:54:50,091 INFO L93 Difference]: Finished difference Result 81 states and 122 transitions. [2024-11-08 18:54:50,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 18:54:50,094 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 66 [2024-11-08 18:54:50,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:54:50,102 INFO L225 Difference]: With dead ends: 81 [2024-11-08 18:54:50,103 INFO L226 Difference]: Without dead ends: 38 [2024-11-08 18:54:50,106 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:54:50,111 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:54:50,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:54:50,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-08 18:54:50,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-08 18:54:50,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 18:54:50,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2024-11-08 18:54:50,161 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 66 [2024-11-08 18:54:50,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:54:50,161 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2024-11-08 18:54:50,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-08 18:54:50,162 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2024-11-08 18:54:50,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 18:54:50,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:54:50,165 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:54:50,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-08 18:54:50,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 18:54:50,367 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:54:50,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:50,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1106494244, now seen corresponding path program 1 times [2024-11-08 18:54:50,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:54:50,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707298236] [2024-11-08 18:54:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:50,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 18:54:50,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 18:54:50,377 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 18:54:50,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-08 18:54:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:50,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 18:54:50,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:54:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-08 18:54:50,728 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:54:50,731 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:54:50,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707298236] [2024-11-08 18:54:50,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707298236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:54:50,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:54:50,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:54:50,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559280178] [2024-11-08 18:54:50,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:54:50,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:54:50,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 18:54:50,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:54:50,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:54:50,743 INFO L87 Difference]: Start difference. First operand 38 states and 51 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-08 18:54:50,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:54:50,876 INFO L93 Difference]: Finished difference Result 73 states and 99 transitions. [2024-11-08 18:54:50,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:54:50,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 66 [2024-11-08 18:54:50,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:54:50,883 INFO L225 Difference]: With dead ends: 73 [2024-11-08 18:54:50,883 INFO L226 Difference]: Without dead ends: 38 [2024-11-08 18:54:50,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:54:50,885 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:54:50,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:54:50,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-08 18:54:50,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-08 18:54:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 18:54:50,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2024-11-08 18:54:50,895 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 66 [2024-11-08 18:54:50,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:54:50,897 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2024-11-08 18:54:50,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-08 18:54:50,898 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2024-11-08 18:54:50,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 18:54:50,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:54:50,900 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:54:50,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-08 18:54:51,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 18:54:51,101 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:54:51,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:51,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1163752546, now seen corresponding path program 1 times [2024-11-08 18:54:51,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:54:51,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214653010] [2024-11-08 18:54:51,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:51,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 18:54:51,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 18:54:51,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 18:54:51,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-08 18:54:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:51,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 18:54:51,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 18:55:26,261 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:55:26,261 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:55:26,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214653010] [2024-11-08 18:55:26,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214653010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:26,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:26,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-08 18:55:26,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662651458] [2024-11-08 18:55:26,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:26,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 18:55:26,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 18:55:26,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 18:55:26,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:55:26,266 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-08 18:55:29,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:29,570 INFO L93 Difference]: Finished difference Result 90 states and 115 transitions. [2024-11-08 18:55:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 18:55:29,573 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 66 [2024-11-08 18:55:29,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:29,575 INFO L225 Difference]: With dead ends: 90 [2024-11-08 18:55:29,575 INFO L226 Difference]: Without dead ends: 55 [2024-11-08 18:55:29,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2024-11-08 18:55:29,578 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 67 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:29,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 203 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 18:55:29,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-08 18:55:29,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2024-11-08 18:55:29,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 18:55:29,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2024-11-08 18:55:29,592 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 66 [2024-11-08 18:55:29,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:29,592 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2024-11-08 18:55:29,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-08 18:55:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2024-11-08 18:55:29,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 18:55:29,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:29,596 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:29,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-08 18:55:29,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 18:55:29,797 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:29,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:29,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1328995212, now seen corresponding path program 1 times [2024-11-08 18:55:29,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:55:29,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212913747] [2024-11-08 18:55:29,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:29,799 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 18:55:29,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 18:55:29,800 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 18:55:29,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-08 18:55:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:29,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 18:55:29,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:30,691 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-08 18:55:30,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:31,180 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:55:31,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212913747] [2024-11-08 18:55:31,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212913747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:31,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4593845] [2024-11-08 18:55:31,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:31,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:31,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:31,185 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:31,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:55:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:31,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 18:55:31,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-08 18:56:15,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:57:58,130 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 18:57:58,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4593845] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 18:57:58,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 18:57:58,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6, 13] total 29 [2024-11-08 18:57:58,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031566645] [2024-11-08 18:57:58,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:57:58,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 18:57:58,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 18:57:58,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 18:57:58,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2024-11-08 18:57:58,134 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-08 18:58:18,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.53s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:58:19,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:58:19,806 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2024-11-08 18:58:19,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 18:58:19,811 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 67 [2024-11-08 18:58:19,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:58:19,813 INFO L225 Difference]: With dead ends: 91 [2024-11-08 18:58:19,814 INFO L226 Difference]: Without dead ends: 89 [2024-11-08 18:58:19,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 18:58:19,816 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 162 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:58:19,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 194 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2024-11-08 18:58:19,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-08 18:58:19,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 52. [2024-11-08 18:58:19,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 18:58:19,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2024-11-08 18:58:19,834 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 67 [2024-11-08 18:58:19,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:58:19,835 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2024-11-08 18:58:19,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-08 18:58:19,836 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2024-11-08 18:58:19,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 18:58:19,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:58:19,838 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:58:19,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-08 18:58:20,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 18:58:20,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:58:20,239 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:58:20,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:58:20,240 INFO L85 PathProgramCache]: Analyzing trace with hash 935968202, now seen corresponding path program 1 times [2024-11-08 18:58:20,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:58:20,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898477345] [2024-11-08 18:58:20,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:58:20,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 18:58:20,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 18:58:20,245 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 18:58:20,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-08 18:58:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:58:20,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 18:58:20,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:58:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-08 18:58:21,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:58:21,773 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:58:21,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898477345] [2024-11-08 18:58:21,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898477345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:58:21,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799316577] [2024-11-08 18:58:21,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:58:21,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:58:21,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:58:21,775 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:58:21,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:58:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:58:21,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 18:58:21,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:59:05,196 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-08 18:59:05,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:01:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 19:01:12,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799316577] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 19:01:12,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:01:12,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6, 13] total 29 [2024-11-08 19:01:12,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013684902] [2024-11-08 19:01:12,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:01:12,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 19:01:12,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:01:12,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 19:01:12,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2024-11-08 19:01:12,311 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-08 19:01:38,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:01:38,435 INFO L93 Difference]: Finished difference Result 134 states and 160 transitions. [2024-11-08 19:01:38,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 19:01:38,441 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 67 [2024-11-08 19:01:38,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:01:38,442 INFO L225 Difference]: With dead ends: 134 [2024-11-08 19:01:38,443 INFO L226 Difference]: Without dead ends: 85 [2024-11-08 19:01:38,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 38.3s TimeCoverageRelationStatistics Valid=265, Invalid=1141, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 19:01:38,445 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 110 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2024-11-08 19:01:38,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 241 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2024-11-08 19:01:38,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-08 19:01:38,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 53. [2024-11-08 19:01:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 41 states have (on average 1.146341463414634) internal successors, (47), 41 states have internal predecessors, (47), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 19:01:38,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2024-11-08 19:01:38,462 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 67 [2024-11-08 19:01:38,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:01:38,463 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2024-11-08 19:01:38,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-08 19:01:38,464 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2024-11-08 19:01:38,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 19:01:38,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:01:38,466 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:01:38,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 19:01:38,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-08 19:01:38,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 19:01:38,867 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:01:38,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:01:38,867 INFO L85 PathProgramCache]: Analyzing trace with hash 346211324, now seen corresponding path program 1 times [2024-11-08 19:01:38,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:01:38,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221588194] [2024-11-08 19:01:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:01:38,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 19:01:38,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 19:01:38,872 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 19:01:38,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-08 19:01:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:01:38,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 19:01:38,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:01:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-08 19:01:39,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:01:40,537 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:01:40,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221588194] [2024-11-08 19:01:40,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221588194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:01:40,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264009053] [2024-11-08 19:01:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:01:40,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:01:40,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:01:40,539 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:01:40,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 19:01:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:01:40,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 19:01:40,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:02:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-08 19:02:35,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:04:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 19:04:08,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264009053] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 19:04:08,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:04:08,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [6, 14] total 31 [2024-11-08 19:04:08,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841913948] [2024-11-08 19:04:08,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:04:08,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 19:04:08,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:04:08,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 19:04:08,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=856, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 19:04:08,965 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-08 19:04:24,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:04:24,520 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2024-11-08 19:04:24,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 19:04:24,525 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 68 [2024-11-08 19:04:24,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:04:24,527 INFO L225 Difference]: With dead ends: 92 [2024-11-08 19:04:24,527 INFO L226 Difference]: Without dead ends: 90 [2024-11-08 19:04:24,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=382, Invalid=1424, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 19:04:24,529 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 216 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-08 19:04:24,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 180 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-08 19:04:24,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-08 19:04:24,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 57. [2024-11-08 19:04:24,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 44 states have internal predecessors, (50), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 19:04:24,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2024-11-08 19:04:24,546 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 68 [2024-11-08 19:04:24,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:04:24,547 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2024-11-08 19:04:24,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-08 19:04:24,547 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2024-11-08 19:04:24,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 19:04:24,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:04:24,549 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:04:24,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-11-08 19:04:24,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 19:04:24,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:04:24,950 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:04:24,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:04:24,950 INFO L85 PathProgramCache]: Analyzing trace with hash -463135302, now seen corresponding path program 1 times [2024-11-08 19:04:24,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:04:24,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288186599] [2024-11-08 19:04:24,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:04:24,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 19:04:24,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 19:04:24,953 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 19:04:24,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-08 19:04:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:04:25,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 19:04:25,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:04:25,068 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-08 19:04:25,068 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:04:25,069 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:04:25,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288186599] [2024-11-08 19:04:25,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288186599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:04:25,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:04:25,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:04:25,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830187163] [2024-11-08 19:04:25,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:04:25,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:04:25,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:04:25,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:04:25,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:04:25,072 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-08 19:04:25,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:04:25,138 INFO L93 Difference]: Finished difference Result 135 states and 159 transitions. [2024-11-08 19:04:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:04:25,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 68 [2024-11-08 19:04:25,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:04:25,143 INFO L225 Difference]: With dead ends: 135 [2024-11-08 19:04:25,144 INFO L226 Difference]: Without dead ends: 81 [2024-11-08 19:04:25,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:04:25,145 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 26 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:04:25,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 96 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:04:25,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-08 19:04:25,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2024-11-08 19:04:25,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 62 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-08 19:04:25,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2024-11-08 19:04:25,167 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 68 [2024-11-08 19:04:25,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:04:25,167 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2024-11-08 19:04:25,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-08 19:04:25,168 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2024-11-08 19:04:25,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 19:04:25,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:04:25,169 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:04:25,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-11-08 19:04:25,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 19:04:25,370 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:04:25,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:04:25,370 INFO L85 PathProgramCache]: Analyzing trace with hash 237929276, now seen corresponding path program 1 times [2024-11-08 19:04:25,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:04:25,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657115071] [2024-11-08 19:04:25,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:04:25,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 19:04:25,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 19:04:25,373 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 19:04:25,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-08 19:04:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:04:25,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 19:04:25,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:04:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-08 19:04:26,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:04:26,909 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:04:26,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657115071] [2024-11-08 19:04:26,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657115071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:04:26,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447137193] [2024-11-08 19:04:26,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:04:26,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:04:26,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:04:26,911 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:04:26,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81952629-bf52-4679-a800-2fe7bfaaba87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 19:04:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:04:26,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 19:04:27,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:05:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-08 19:05:08,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:07:52,753 WARN L286 SmtUtils]: Spent 26.04s on a formula simplification. DAG size of input: 110 DAG size of output: 103 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-08 19:09:04,333 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 19:09:04,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447137193] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 19:09:04,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:09:04,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6, 13] total 29 [2024-11-08 19:09:04,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308286118] [2024-11-08 19:09:04,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:09:04,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 19:09:04,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:09:04,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 19:09:04,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2024-11-08 19:09:04,336 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9)